Rafael Nadal and John McEnroe were present for the reunion of a mother and child at a charity tennis match in Mallorca recently. Nadal was about to serve when he paused for a commotion in the crowd. It was a worried mother, searching for her daughter who had wandered off. Play stopped and the parent and child were reunited about 30-seconds later.
The video and story just focuses on the mother searching for her lost child. I assume that was the father that came in at the end to get in on the group hug. You can see him getting up from his seat in the front row early in the video.